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STIS Instrument Handbook for Cycle 24 |
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• Specify accurate V magnitude, fluxes, spectral type, and colors for your target. This is required for MAMA targets to allow for bright object screening.
• Specify any needed orientation and/or timing requirements. To facilitate scheduling, please provide the broadest possible ranges for these requirements that are consistent with your scientific needs. If multiple ORIENTs are possible, please include the alternatives.
• Verify the correct usage (i.e., direction) of your PATTERN optional requirement or POS-TARGs (if used).
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• CR-SPLIT CCD exposures, as appropriate. Keep individual exposure times < 1000 s if possible to avoid excessive cosmic ray events.
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• Consider the use of stepping along the slit for first-order modes or the use of FP-SPLIT slits for echelle modes, when high signal-to-noise is required.
• For faint objects, consider using the D1 pseudo-apertures to mitigate the FUV-MAMA dark current.